Power plants – Combustion products used as motive fluid
Patent
1997-12-11
2000-05-30
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
415104, F02C 700
Patent
active
060677910
ABSTRACT:
A turbine engine having interior cavity sealed by a thermally controlled valve is disclosed. The cavity is defined by at least one cylindrical wall portion. The valve comprises an opening in the cylindrical wall portion and a cylindrical band, coaxial and interior to the wall portion. The cylindrical band is made of material having a higher thermal coefficient of expansion than the wall portion. As the temperature of the engine increases, the band expands at a higher rate than the wall, thereby sealing the valve. As the temperature decreases, the band contracts thereby opening the valve. The valve may be used to permit a cavity to be pressurized at low temperatures. The pressure in the cavity may exert a forward load on a thrust bearing, suspending the engine shaft.
REFERENCES:
patent: 2530477 (1950-11-01), Ostmar
patent: 2647684 (1953-08-01), Lombard
patent: 3688982 (1972-09-01), McAninch et al.
patent: 3736069 (1973-05-01), Beam, Jr. et al.
patent: 3966354 (1976-06-01), Patterson
patent: 4023919 (1977-05-01), Patterson
patent: 4217755 (1980-08-01), Williams
patent: 4251185 (1981-02-01), Karstensen
patent: 4311432 (1982-01-01), Kildea
patent: 4565492 (1986-01-01), Bart et al.
patent: 4613280 (1986-09-01), Tate
patent: 4615657 (1986-10-01), Kreitmeier
patent: 4730977 (1988-03-01), Haaser
patent: 4759883 (1988-07-01), Woody et al.
patent: 4852601 (1989-08-01), Chamberlin
patent: 4907943 (1990-03-01), Kelch
patent: 5001896 (1991-03-01), Hilt et al.
patent: 5154048 (1992-10-01), Ponziani et al.
patent: 5316437 (1994-05-01), Czachor
patent: 5423659 (1995-06-01), Thompson
patent: 5540546 (1996-07-01), Bouricet
Astle Jeffrey W.
Casaregola Louis J.
Pratt & Whitney Canada Inc.
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